// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_VIEWS_COREWM_TOOLTIP_AURA_H_
#define UI_VIEWS_COREWM_TOOLTIP_AURA_H_

#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "ui/views/corewm/tooltip.h"
#include "ui/views/widget/widget_observer.h"

namespace gfx {
class FontList;
class Size;
} // namespace gfx

namespace views {

class Widget;

namespace corewm {

    // Implementation of Tooltip that shows the tooltip using a Widget and Label.
    class VIEWS_EXPORT TooltipAura : public Tooltip, public WidgetObserver {
    public:
        TooltipAura();
        ~TooltipAura() override;

    private:
        class TooltipView;

        // Adjusts the bounds given by the arguments to fit inside the desktop
        // and applies the adjusted bounds to the label_.
        void SetTooltipBounds(const gfx::Point& mouse_pos,
            const gfx::Size& tooltip_size);

        // Destroys |widget_|.
        void DestroyWidget();

        // Tooltip:
        int GetMaxWidth(const gfx::Point& location) const override;
        void SetText(aura::Window* window,
            const base::string16& tooltip_text,
            const gfx::Point& location) override;
        void Show() override;
        void Hide() override;
        bool IsVisible() override;

        // WidgetObserver:
        void OnWidgetDestroying(Widget* widget) override;

        // The view showing the tooltip.
        scoped_ptr<TooltipView> tooltip_view_;

        // The widget containing the tooltip. May be NULL.
        Widget* widget_;

        // The window we're showing the tooltip for. Never NULL and valid while
        // showing.
        aura::Window* tooltip_window_;

        DISALLOW_COPY_AND_ASSIGN(TooltipAura);
    };

} // namespace corewm
} // namespace views

#endif // UI_VIEWS_COREWM_TOOLTIP_AURA_H_
